Mingle PP is referred to as MPP. It is the type of PP you get from using mingle mode or playing other people at Tin Pin Slammer. Mingle mode awards MPP as follows::

* 50 MPP for mingling with an ESP'er (A DS running The World Ends With You in mingle mode)
* 20 MPP for mingling with a Civvie (A DS running any other game)
* 100 MPP for mingling with an Alien (Random bonus)